Machine learning for hospital readmission prediction in pediatric population.

BACKGROUND AND OBJECTIVE: Pediatric readmissions are a burden on patients, families, and the healthcare system. In order to identify patients at higher readmission risk, more accurate techniques, as machine learning (ML), could be a good strategy to expand the knowledge in this area. The aim of this study was to develop predictive models capable of identifying children and adolescents at high risk of potentially avoidable 30-day readmission using ML. METHODS: Retrospective cohort study was carried out with 9,080 patients under 18 years old admitted to a tertiary university hospital. Demographic, clinical, and biochemical data were collected from electronic databases. We randomly divided the dataset into training (75 %) and testing (25 %), applied downsampling, repeated cross-validation with five folds and ten repetitions, and the hyperparameter was optimized of each technique using a grid search via racing with ANOVA models. We applied six ML classification algorithms to build the predictive models, including classification and regression tree (CART), random forest (RF), gradient boosting machine (GBM), extreme gradient boosting (XGBoost), decision tree and logistic regression (LR). The area under the receiver operating curve (AUC), sensitivity, specificity, Youden's J-index and accuracy were used to evaluate the performance of each model. RESULTS: The avoidable 30-day hospital readmissions rate was 9.5 %. Some algorithms presented similar AUC, both in the dataset training and in the dataset testing, such as XGBoost, RF, GBM and CART. Considering the Youden's J-index, the algorithm that presented the best index was XGBoost with bagging imputation, with AUC of 0.814 (J-index of 0.484). Cancer diagnosis, age, red blood cells, leukocytes, red cell distribution width and sodium levels, elective admission, and multimorbidity were the most important characteristics to classify between readmission and non-readmission groups. CONCLUSION: Machine learning approaches, especially XGBoost, can predict potentially avoidable 30-day pediatric hospital readmission into tertiary assistance. If implemented in the computer hospital system, our model can help in the early and more accurate identification of patients at readmission risk, targeting health strategic interventions.

Association between health risk behaviors and food consumption in adolescents.

The study aims to evaluate the association between substance use and social isolation with food consumption in adolescents. A cross-sectional study was conducted with 2,040 adolescents from a medium-sized city in Brazil. The exposures assessed were the use of alcohol, tobacco, and other substances, and social isolation. The outcomes were the regular consumption (≥5 times/week) of beans, fruit/fruit salad, candies, and soft drinks, and an unhealthy eating score. The association between health risk behaviors and food consumption was assessed through logistic and linear regressions. Regular users of alcohol were more likely to have regular consumption of candies and soft drinks, and those who used tobacco regularly were less likely to have regular bean consumption and more likely to have regular candies consumption. The use of at least one substance was negatively associated with regular bean consumption and positively associated with regular consumption of sweets and soft drinks. Socially isolated adolescents were less likely to have regular bean consumption. Substance use was positively associated with the unhealthy eating score. In conclusion, substance use and social isolation were associated with less regular consumption of healthy food markers and greater regular consumption of unhealthy food markers.

Prevalence and associated factors on overweight/obesity in pregnant women assisted by the Family Health Strategy / Prevalência e fatores associados ao sobrepeso/ obesidade em gestantes assistidas na Estratégia Saúde da Família

Abstract Objectives: to estimate the prevalence of overweight/obesity and analyze the associated factors in pregnant women assisted by family health teams. Methods: epidemiological observational study of populational, cross-sectional, and analytical base carried out with pregnant women at the Estratégia de Saúde da Família (Family Health Strategy) in the city of Montes Claros, Minas Gerais State, Brazil, between October 2018 and November 2019. Socioeconomic and demographic, obstetric characteristics, social and family support, emotional aspects and comorbidities. The presence of overweight/obesity was estimated by the initial Body Mass Index (up to the 13th gestational week) acquired from the pregnant woman's health booklet. Hierarchized Poisson regression with robust variance was carried out. Results: a total of 1,279 pregnant women participated in this study. The prevalence of overweight/ obesity was 45.3% and was associated with the following factors: having a partner (PR=1.52; CI95% =1.24-1.86), higher family income (PR=1.23; CI95% =1.04-1.46), presence of previous pregnancies (PR=1.65; CI95% =1.39-1.95%), higher age group (PR=2.26; CI95% =1.70-3.01), gestational diabetes mellitus (PR=1.43; CI95% =1.21-1.69) and systemic arterial hypertension (PR=1.29; CI95% =1.04-1.61). Conclusion: there was a high prevalence of overweight/obesity in the evaluated pregnant women and its association with sociodemographic and obstetric factors and chronic comorbidities. There is a necessity for monitoring and carrying out nutritional education in prenatal care provided by family health teams, with emphasis on strengthening multidisciplinary care.

Resumo Objetivos: estimar a prevalência de sobrepeso/obesidade e analisar os fatores associados em gestantes assistidas por equipes de saúde da família. Métodos: estudo epidemiológico observacional de base populacional, transversal e analítico, realizado com gestantes da Estratégia de Saúde da Família em Montes Claros, MG, Brasil, entre outubro de 2018 a novembro de 2019. Avaliaram-se características socioeconômicas e demográficas, obstétricas, apoio social e familiar, aspectos emocionais e comorbidades. A presença de sobrepeso/ obesidade foi estimada pelo Índice de Massa Corporal inicial (até 13ª semana gestacional) adquirido da caderneta da gestante. Foi realizada regressão de Poisson hierarquizada com variância robusta. Resultados: participaram deste estudo 1.279 gestantes. A prevalência do sobrepeso/obesidade foi de 45,3% e esteve associada aos fatores: ter companheiro(a) (RP=1,52; IC95%=1,24-1,86), maior renda familiar (RP=1,23; IC95%=1,04-1,46), presença de gestações anteriores (RP=1,65; IC95%=1,39-1,95%), maior faixa etária (RP=2,26; IC 95%=1,70-3,01), diabetes mellitus gestacional (RP=1,43; IC95%=1,21-1,69) e hipertensão arterial sistêmica (RP=1,29; IC95%=1,04-1,61). Conclusão: verificou-se alta prevalência de sobrepeso/obesidade nas gestantes avaliadas e sua associação com fatores sociodemográficos, obstétricos e comorbidades crônicas. Há necessidade de monitoramento e de realização da educação nutricional no cuidado pré-natal prestado pelas equipes de saúde da família, com ênfase no fortalecimento do cuidado multiprofissional.

Nutritional Status and Growth Deficit in Children and Adolescents with Cancer at Different Moments of Treatment.

BACKGROUND: Nutrition deficits are common in children and adolescents undergoing cancer treatment and can contribute to a worse prognosis. There are scarce studies regarding this context considering different moments of treatment. The aim of this study was to evaluate the association between moment of treatment and nutritional status in children and adolescents with cancer. METHODS: A retrospective study was performed from January 2013 to December 2015, including data from all clinical records of patients under 18 years old with cancer. Clinical, nutritional support and anthropometric data were collected at four moments of treatment from cancer diagnosis: diagnosis (t0), 3 mo, (t1), 6 mo, (t2) and 1 year (t3). In addition, nutritional indicators were evaluated. Generalized Estimating Equation models were performed to analyze changes on anthropometric indices throughout four moments of treatment. RESULTS: The sample comprised 73 patients and frequency of nutritional deficits ranged from 13.0% to 18.6%. All nutritional indicators decreased at t1, showed a modest recovery at t2 and a stronger recovery at t3 (p < 0.001). Growth was also impacted during treatment, mainly on patients under 2 years in the first three months of treatment. CONCLUSIONS: Moment of treatment was associated with growth deficit and decreased percentiles in development indicators.

Serum Albumin is Independent Predictor of Hospital Mortality in Patients with Cancer / A Albumina Sérica é Preditor Independente de Mortalidade Hospitalar em Pacientes com Câncer / La Albúmina Sérica es un Predictor Independiente de Mortalidad Hospitalaria en Pacientes con Cáncer

Introduction: Cancer is one of the leading causes of morbidity and mortality worldwide. There are few studies showing adjusted models with other predictors of mortality by a conceptual model perspective. Objective: The objective of this study was to verify the prediction of albumin and Prognostic Nutritional Index (PNI) with in-hospital mortality in cancer patients. Method: Retrospective study was performed from 2014 to 2016 with 262 cancer patients (gastrointestinal tract, male genital organs, breast, metastasis, urinary tract, head and neck and others). Demographic data, blood counts, C-reactive protein, albumin, and haematological indexes (Prognosis nutritional index - PNI, Neutrophils to lymphocytes ratio - NLR, Monocytes lymphocytes ratio - MLR, Platelets to lymphocytes ratio - PLR and Platelets to albumin ratio - PAR), nutritional diagnoses and hospital outcomes (discharge or death) were collected. The cumulative probability of death was calculated by Kaplan-Meier curves, and survival analyses were performed using the Cox proportional hazards model. Results: The frequency of death among the study patients was 10.7% (28). Among the patients who died, 99.2% (26) presented some degree of malnutrition (p=0.004). In the multivariate analysis, serum albumin (<3 g/dL) was independently associated with in-hospital mortality (HR=3.43, 95% CI 1.11-10.63). On the other hand, the PNI was not associated with in-hospital mortality. Conclusion: Serum albumin levels during hospitalization were predictors of in-hospital mortality in the population evaluated. These results suggest that the serum levels of this protein can be used in clinical practice, adding prognostic information in patients with cancer

Introducción: El cáncer es una de las principales causas de morbilidad y mortalidad en todo el mundo. Hay pocos estudios que muestren modelos ajustados con otros predictores de mortalidad desde una perspectiva de modelo conceptual. Objetivo: El objetivo de este estudio fue verificar la predicción de la albúmina y el Índice Nutricional Pronóstico (IPN) con la mortalidad hospitalaria en pacientes con cáncer (tracto gastrointestinal, órganos genitales masculinos, mama, metástasis, tracto urinario, cabeza y cuello y otros). Método: Se realizó un estudio retrospectivo de 2014 a 2016 con 262 pacientes con cáncer. Se recogieron datos demográficos, hemogramas, proteína C reactiva, albúmina y índices hematológicos (Índice de Pronóstico Nutricional - IPN, proporción neutrófilos/linfocitos - NLR, proporción monocitos/linfocitos - MLR, proporción plaquetas/linfocitos - PLR y proporción plaquetas/albúmina - PAR), diagnósticos nutricionales y resultados hospitalarios (alta o muerte). La probabilidad acumulada de muerte se calculó mediante curvas de Kaplan-Meier y se realizaron análisis supervivencia utilizando el modelo de riesgos proporcionales de Cox. Resultados: La frecuencia de muerte entre los pacientes del estudio fue del 10,7% (28). Entre los pacientes fallecidos, el 99,2% (26) presentaba algún grado de desnutrición (p=0,004). En el análisis multivariado, la albúmina sérica (<3 g/dL) se asoció de forma independiente con la mortalidad hospitalaria (HR=3,43, IC 95% 1,11-10,63). Por otro lado, el IPN no se asoció con mortalidad intrahospitalaria. Conclusión: Los niveles de albúmina sérica durante la hospitalización fueron predictores de mortalidad intrahospitalaria en la población evaluada. Nuestros resultados sugieren que los niveles séricos de esta proteína se pueden utilizar en la práctica clínica, agregando información de pronóstico en pacientes con cáncer.

Introdução: O câncer é uma das principais causas de morbidade e mortalidade em todo o mundo. Existem poucos estudos mostrando modelos ajustados com outros preditores de mortalidade por uma perspectiva de modelo conceitual. Objetivo: Verificar a predição de albumina e do Índice Nutricional Prognóstico (IPN) com mortalidade intra-hospitalar em pacientes com câncer. Método: Estudo retrospectivo realizado de 2014 a 2016 com 262 pacientes com câncer (trato gastrointestinal, órgãos genitais masculinos, mama, metástases, trato urinário, cabeça e pescoço e outros). Foram coletados dados demográficos, hemograma, proteína C reativa, albumina e índices hematológicos (índice de prognóstico nutricional - IPN; relação neutrófilo por linfócitos - RNL; relação monócitos por linfócitos - RML; relação plaquetas por linfócitos - RPL; e relação plaquetas por albumina ­ RPA), diagnósticos nutricionais e desfechos hospitalares (alta ou óbito). A probabilidade cumulativa de morte foi calculada pelas curvas de Kaplan-Meier e as análises de sobrevivência realizadas usando o modelo de risco proporcional de Cox. Resultados: A frequência de óbito entre os pacientes do estudo foi de 10,7% (28). Entre os pacientes que morreram, 99,2% (26) apresentavam algum grau de desnutrição (p=0,004). Na análise multivariada, a albumina sérica (<3 g/dL) associou-se de forma independente à mortalidade hospitalar (HR=3,43, IC95% 1,11-10,63). Por outro lado, o IPN não foi associado com mortalidade intra-hospitalar. Conclusão: Os níveis de albumina sérica durante a internação foram preditores de mortalidade intra-hospitalar na população avaliada. Esses resultados sugerem que os níveis séricos dessa proteína podem ser utilizados na prática clínica, agregando informações prognósticas em pacientes com câncer

Time after ostomy surgery and type of treatment are associated with quality of life changes in colorectal cancer patients with colostomy.

PURPOSE: Quality of life in colorectal cancer patients may be affected by colostomy and treatment, but relevant studies are still scarce and contradictory. The present study aimed to evaluate the association between colostomy time and treatment type with quality of life in colorectal cancer patients. METHODS: A prospective observational study of 41 patients with colorectal cancer was conducted on three occasions T0, T1 and T2 (0-2; 3-5 and 6-8 months after ostomy surgery, respectively). The treatments prescribed were: surgery alone, chemotherapy or radiotherapy, or chemoradiotherapy. European Organization for Research and Treatment of Cancer questionnaires were used to evaluate quality of life. Worsening clinical changes were evaluated considering difference in scores between times of surgery ≥±9 points. RESULTS: Regarding ostomy surgery, scores in physical function improved between T0 and T1 and these better scores were maintained at T1 to T2. The same was observed for urinary frequency, appetite loss and dry mouth. Chemoradiotherapy was associated with worse scores for global health status, nausea and vomiting, bloating and dry mouth. Although significant differences were not observed in some domains in the Generalized Estimating Equations analysis, patients showed noticeable changes for the worse in the pain, anxiety, weight concern, flatulence and embarrassment domains during these periods. CONCLUSIONS: Colostomy improved quality of life at 3-5 months in most domains of quality of life and remained better at 6-8 months after surgery. Chemoradiotherapy had a late negative influence on quality of life. Health teams could use these results to reassure patients that this procedure will improve their quality of life in many functional and symptomatic aspects.

Ostomy time and nutrition status were associated on quality of life in patients with colorectal cancer / Tempo de estomia e estado nutricional são associados com a qualidade de vida em pacientes com câncer colorretal

ABSTRACT Introduction: Colorectal cancer frequency increases each year and consequently the number of ostomies, a procedure that helps in the treatment of colorectal cancer but has an impact on quality of life. Studies evaluating the impact of ostomy time and nutritional status on the quality of life of colostomized patients with colorectal cancer are scarce in the literature. So, the aim of this study was to evaluate the association ostomy time and nutritional status on quality of life in colostomized colorectal cancer patients. Methods: A cross-sectional study was conducted with 97 colostomized patients due to colorectal cancer from a reference service. Socioeconomic, demographic, clinical data were obtained. European Organisation for Research and Treatment of Cancer questionnaires EORTC-QLQ30 and EORTC-QLQ-CR29 were used to analyse the quality of life. Statistical significance analysis was performed using the Wilcoxon's non-parametric or Chi-Square test. Results: Of the 97 individuals, 50.5% were female, 64.9% were over 60 years old, 67.4% have ostomy for less than 1 year. Half of the patients had some nutritional status inadequacy: 24.2% were malnourished, 17.9% overweight and 8.4% obese. Shorter ostomy time was associated with role function, blood or mucus in stools, stoma care problems and men's sexual interest, while malnutrition was associated with concern about weight. Conclusions: Ostomy time and nutrition status were associated with quality of life in some domains, such as role function, insomnia, appetite loss, abdominal pain, buttock pain, bloating, hair loss, taste loss have an impact together with the nutritional status on the quality of life in patients colostomized colorectal cancer.

RESUMO Introdução: A frequência do câncer colorretal aumenta a cada ano e, consequentemente, aumenta o número de estomias, procedimento que auxilia no tratamento do câncer colorretal, porém impacta na qualidade de vida. Estudos que avaliam o impacto do tempo de estomia e do estado nutricional na qualidade de vida de pacientes colostomizados com câncer colorretal são escassos na literatura. Assim, o objetivo deste estudo foi avaliar a associação entre tempo de estomia e estado nutricional e qualidade de vida em pacientes colostomizados por câncer colorretal. Métodos: Participaram deste estudo transversal 97 pacientes colostomizados por câncer colorretal de um serviço de referência. Dados socioeconômicos, demográficos e clínicos foram obtidos. Os questionários da Organização Europeia para Pesquisa e Tratamento do Câncer EORTC-QLQ30 e EORTC-QLQ-CR29 foram utilizados para analisar a qualidade de vida. A análise de significância estatística foi realizada usando o teste não paramétrico Wilcoxon ou teste Qui-Quadrado. Resultados: Dos 97 indivíduos, 50.,5% eram do sexo feminino, 64.,9% tinham mais de 60 anos, 67.,4% com estomia há menos de 1 ano. Metade dos pacientes apresentava inadequação do estado nutricional: 24.,2% estavam desnutridos, 17.,9% sobrepeso e 8,4% obesos. O menor tempo de estomia foi associado ao desempenho funcional, sangue ou muco nas fezes, problemas em cuidar da estomia e interesse sexual dos homens, enquanto a desnutrição foi associada à preocupação com o peso. Conclusão: A cirurgia de estomia esteve associada à qualidade de vida em alguns domínios, como desempenho funcional, insônia, perda de apetite, dor abdominal, dor nas nádegas, perda de cabelo, perda do paladar, e tem um impacto junto ao estado nutricional da qualidade de vida em pacientes colostomizados por câncer colorretal.

Influência do nível socioeconômico, idade, gordura corporal e sintomas depressivos na frequência de atividade física em adultos: uma análise de caminhos / Influence of socioeconomic status, age, body fat, and depressive symptoms on evel of physical activity in adults: a path analysis

Resumo A atividade física é um comportamento complexo e influenciado por variáveis sociodemográficas e clínicas. A melhor compreensão desses fatores possibilita considerar a associação deles com a atividade física. O objetivo deste estudo foi estimar os efeitos do nível socioeconômico, idade, gordura corporal e sintomas depressivos na frequência de atividade física entre adultos. Trata-se de um estudo transversal de base populacional conduzido com 808 indivíduos. Foram avaliadas as inter-relações entre as variáveis nível socioeconômico, idade, gordura corporal e sintomas depressivos no nível de atividade física total, por meio da técnica "path analysis". Observou-se efeito direto negativo e significativo da idade (β = -0,113; p < 0,004) nos níveis de atividade física. A idade (β = 0,376; p < 0,001) influenciou a gordura corporal, com efeito positivo e significativo. Os sintomas de depressão foram influenciados negativamente pelo nível socioeconômico (β = -0,126; p < 0,001) e positivamente pela idade (β = 0,244; p < 0,001) e gordura corporal (β = 0,169; p < 0,004). O nível socioeconômico, a gordura corporal e os sintomas depressivos não influenciaram diretamente os níveis de atividade física. Concluindo, os resultados mostraram que o avançar da idade contribui para a redução da prática de atividade física.

Abstract Physical activity is a complex behavior influenced by sociodemographic and clinical factors. A better understanding of the relationships between these factors is essential to better understanding their influence on physical activity. The objective of this study was to examine the association between socioeconomic status, age, body fat, and depressive symptoms and level of physical activity among adults. We conducted a cross-sectional population-based study with 808 individuals to examine the interrelations between the above factors and their influence on level of physical activity using path analysis. Age had a significant direct negative effect on level of physical activity (β = -0.113, p < 0.004) and a significant positive effect on body fat (β = 0.376, p < 0.001). Depressive symptoms were negatively influenced by socioeconomic status (β = -0.126, p < 0.001) and positively influenced by age (β = 0.244, p < 0.001) and body fat (β = 0.169; p < 0.004). Socioeconomic status, body fat and depressive symptoms did not directly influence level of physical activity. This study concludes that level of physical activity declines with advancing age.

High red blood cell distribution width is associated with a risk of short-term mortality in hospitalized surgical, but not clinical patients.

BACKGROUND & AIMS: The distribution width of red blood cells (RDW) is a known factor risk for mortality. However, the association between high RDW and short-term mortality in surgical patients is poorly understood. The aim of this study was to evaluate the association of high RDW with all-cause in-hospital mortality, in surgical and non-surgical patients. METHODS: A retrospective study was performed with patients aged 18 years or older, hospitalized in Clinical Medical and Surgery wards, using adjustments based on a conceptual model. Cox regression was used to determine the independent predictors of in-hospital mortality. The RDW cutoff value was 13.6%. RESULTS: Of the 2923 patients, 46.1% were over 60 years old, 58.7% were male and 4.7% died. The area under the ROC curve was 0.677 (CI 95%: 0.619-0.712). RDW was associated with an adjusted risk for all-cause in-hospital mortality in surgical (HR 1.17 - CI 95%: 1.03-1.32), but not in clinical patients. For every 1% increase in RDW, the risk of all-cause hospital death in surgical patients increased by 17%. RDW ≥13.6% was associated with an adjusted risk of all cause in-hospital mortality in surgical (HR 2.65 - 95%CI: 1.22-5.73), but not in clinical patients. CONCLUSIONS: High RDW was associated with a risk of in-hospital mortality independent of age, sex, hemoglobin level, multimorbidity, nutritional status and immunological condition. We therefore recommend the use of RDW as a possible marker of mortality risk in clinical practice in surgical patients.

Oral Nutritional Supplementation Affects the Dietary Intake and Body Weight of Head and Neck Cancer Patients during (Chemo) Radiotherapy.

Considering the symptoms of (chemo) radiotherapy and the reduction in food intake in head and neck cancer (HNC) patients, this study aimed to investigate the association between treatment time points and oral nutritional supplementation (ONS) on dietary intake to estimate the frequency of energy and nutrient inadequacy, and also to evaluate body weight changes (BWC). Dietary intake data of 65 patients were obtained from 24-h dietary recalls and prevalence of inadequacy was calculated before or at the beginning (T0), in the middle (T1), and at the end of treatment (T2). BWC were calculated as the weight difference considering the previous weight reported and/or measured. Energy and macronutrient intake decreased in T1 and then improved in T2 (p < 0.001 for both). Micronutrient intake increased during treatment due to ONS use, but still presented a high probability of inadequate intake. In particular, calcium, magnesium, and vitamin B6 showed almost 100% of probability of inadequacy for those who did not use ONS. Finally, overweight patients suffered a higher weight accumulated deficit with a delta of -15 kg compared to other BMI (body mass index) categories. Therefore, we strongly recommend initiating nutritional counseling in conjunction with prophylactic ONS prescription from diagnosis to adjust nutrient intake and minimize weight loss.

Acurácia de pontos de corte de IMC e circunferência da cintura para a predição de obesidade em idosos / Accuracy of BMI and waist circumference cut-off points to predict obesity in older adults

Resumo O objetivo deste estudo foi analisar a validade e a acurácia do Índice de Massa Corporal (IMC) e da Circunferência da Cintura (CC) na avaliação de obesidade avaliada pelo excesso de gordura corporal (GC) e propor pontos de corte mais adequados para idosos. Os pontos propostos da literatura IMC (25,27 ou 30 kg/m2) e CC (≥ 102 cm-homens e ≥ 88 cm-mulheres ou ≥ 90 cm-homens e ≥ 80 cm-mulheres) foram avaliados conforme densitometria corporal total. A elevada GC foi definida por percentil > 90. Dos 132 idosos, 60,6% eram mulheres de 60-91 anos. Os pontos de corte recomendados de IMC ≥ 25 e ≥ 27kg/m2 apresentaram desempenhos similares, sendo que o IMC ≥ 30kg/m2 apresentou alta especificidade e baixa sensibilidade no sexo masculino e melhor desempenho para GC nas mulheres. Os pontos de corte convencionais de CC não apresentaram boa sensibilidade/especificidade. Foram propostos novos pontos de corte para IMC (masculino-25 kg/m2; feminino-26,6 kg/m2) e CC (masculino-98,8 cm; feminino-77,8 cm). Estes valores demonstraram sensibilidade e especificidade > 74% e acurácia > 76%. As áreas sob a curva foram > 0,86. O presente estudo propõe a utilização de pontos de corte mais acurados para diagnóstico de obesidade/GC em idosos, sendo para homens IMC 25kg/m2 e CC de 98,8cm e para mulheres IMC de 26,6kg/m2 e CC de 77,8cm, com melhores níveis de sensibilidade e especificidade.

Abstract The main objectives were to analyse the validity and accuracy of Body Mass Index (BMI) and Waist Circumference (WC) to evaluate obesity by excess of body fat in older adults and to identify more adequate cut-off points for this age group. The recommended cut-off points for BMI (25, 27 or 30 kg/m2) and WC (≥ 102 cm for men and ≥ 88 cm for women or ≥ 90cm for men and ≥ 80 cm for women) were compared to the total body densitometry. BF was defined by a value higher than the 90th percentile. Out of the 132 participants, 61% were women and aged between 60 and 91 years. The recommended cut-off points of BMI ≥ 25kg/m2 and BMI ≥ 27 kg/m2 showed similar performances. BMI ≥ 30 kg/m2 showed high specificity but low sensitivity to identify BF in men and better performance in women. Conventional WC cut-off points showed low sensitivity and specificity. Based on our analyses, new cut-off points for BMI (25 kg/m2 for men and 26.6 kg/m2 for women) and WC (98.8 cm for men and 77.8cm for women) were proposed. The new cut-off points showed sensitivity and specificity values > 74% and accuracy > 76%. The areas under the curve (ROC) were > 0.86. The new BMI and WC cut-off points proposed in the present study for the diagnosis of obesity in older adults showed the best levels of sensitivity and specificity for this age group.

Combination of red blood cell distribution width and body mass index (COR-BMI) predicts in-hospital mortality in patients with different diagnoses?

BACKGROUND: The combination of red blood cell distribution width and body mass index (COR-BMI) is indicated as a new prognostic index of survival in patients with laryngeal cancer. However, the ability of this prediction in other types of cancer or whether its use can be expanded to non-oncological patients is unknown. The aim of this study was to investigate the prediction of prognosis of in-hospital mortality of the COR-BMI in oncological and non-oncological patients. METHODS: A retrospective study was performed with all hospitalized patients between 2014 and 2016, totaling 2930 patients, 262 oncological and 2668 non-oncological. The COR-BMI was divided into three classes: 0, RDW ≤ 13.1% and BMI ≥ 25 kg/m2; 1, RDW ≤ 13.1% and BMI < 18.5 or ≥ 18.5 but < 25 kg/m2 and RDW > 13.1% and BMI ≥ 18.5 but < 25 or BMI ≥ 25 kg/m2; and 2, RDW > 13.1% and BMI < 18.5 kg/m2. In order to analyze the relationship between COR-BMI and in-hospital mortality in the studied population, the Cox Proportional Hazards Model was used in a multivariate analysis based on a conceptual model. RESULTS: The COR-BMI was an independent predictor of in-hospital mortality in non-oncological patients (1 versus 0: HR = 3.34; CI = 1.60-6.96, p = 0.001; 2 versus 0: HR = 3.38; CI = 1.22-9.39, p = 0.019). The survival rate of these patients was lower among those with the highest scores on the COR-BMI. This prediction was not found in oncological patients. CONCLUSION: The present study suggests that the COR-BMI may have its practical use expanded to non-oncological patients as an independent predictor of in-hospital mortality.

Food consumption of users of the Brazilian Unified Health System by type of assistance and participation in the "Bolsa Família". / Consumo alimentar de usuários do Sistema Único de Saúde segundo o tipo de assistência e participação no Bolsa Família.

A cross-sectional study was conducted to evaluate and compare dietary intake, type of assistance (Basic Health Units - UBS and Family Health Strategies - ESF) and participation in the "Bolsa Família" Program (PBF) among users of the Brazilian Unified Health System, (SUS). The sample was composed of individuals of both sexes between 18 and 78 years of age in Porto Alegre, state of Rio Grande do Sul. Socioeconomic, clinical and food consumption data were collected via a questionnaire adapted from the SISVAN and VIGITEL national surveys. The analyses were conducted using R3.1 software. Of the 187 patients, 91 were affiliated to the ESF, 96 to UBS and 40 were registered with the PBF. A healthy eating pattern was identified in only 41% of SUS users. It was observed that 55% did not consume raw salad (37% p = 0.04) and vegetable consumption was lower among the PBF users (67.5% versus 75.9%; p = 0.02). There was no significant difference in food consumption considering the kind of assistance (ESF or UBS). A healthy consumption pattern was not associated with demographic and socioeconomic variables. The majority of beneficiaries of the PBF did not admit to healthy eating patterns. Therefore, effective health promotion and prevention is needed for this population, mainly among the beneficiaries of the PBF.

Foi realizado estudo transversal com objetivo de avaliar e comparar o consumo alimentar de usuários do Sistema Único de Saúde (SUS), segundo tipo de assistência (Unidades Básicas de Saúde-UBS e Estratégias de Saúde da Família-ESF) e participação no Programa Bolsa Família (PBF). A amostra foi composta por indivíduos de 18 a 78 anos, de ambos sexos, de Porto Alegre-RS. Foram coletados dados socioeconômicos, clínicos e de consumo alimentar através de questionário adaptado dos inquéritos nacionais SISVAN e VIGITEL. As análises foram realizadas no software R3.1. Dos 187 entrevistados, 91 pertenciam à ESF, 96 à UBS e 40 eram beneficiários do PBF. O padrão alimentar saudável foi identificado em apenas 41% dos usuários do SUS. Entre os beneficiários do PBF, consumo de hortaliças foi menor (67,5% vs 75,9;p = 0,02) e 55% não consumiam salada crua (37%;p = 0,04). Não houve diferença significativa no consumo considerando o tipo de assistência recebida (ESF ou UBS). O padrão de consumo saudável não foi associado às variáveis demográficas e socioeconômicas. A maioria dos beneficiados pelo PBF também não demonstrou padrão alimentar saudável. Portanto, maiores esforços para efetiva promoção e prevenção da saúde são necessários para essa população, principalmente entre os beneficiados pelo PBF.

Consumo alimentar de usuários do Sistema Único de Saúde segundo o tipo de assistência e participação no Bolsa Família / Food consumption of users of the Brazilian Unified Health System by type of assistance and participation in the "Bolsa Família"

Resumo Foi realizado estudo transversal com objetivo de avaliar e comparar o consumo alimentar de usuários do Sistema Único de Saúde (SUS), segundo tipo de assistência (Unidades Básicas de Saúde-UBS e Estratégias de Saúde da Família-ESF) e participação no Programa Bolsa Família (PBF). A amostra foi composta por indivíduos de 18 a 78 anos, de ambos sexos, de Porto Alegre-RS. Foram coletados dados socioeconômicos, clínicos e de consumo alimentar através de questionário adaptado dos inquéritos nacionais SISVAN e VIGITEL. As análises foram realizadas no software R3.1. Dos 187 entrevistados, 91 pertenciam à ESF, 96 à UBS e 40 eram beneficiários do PBF. O padrão alimentar saudável foi identificado em apenas 41% dos usuários do SUS. Entre os beneficiários do PBF, consumo de hortaliças foi menor (67,5% vs 75,9;p = 0,02) e 55% não consumiam salada crua (37%;p = 0,04). Não houve diferença significativa no consumo considerando o tipo de assistência recebida (ESF ou UBS). O padrão de consumo saudável não foi associado às variáveis demográficas e socioeconômicas. A maioria dos beneficiados pelo PBF também não demonstrou padrão alimentar saudável. Portanto, maiores esforços para efetiva promoção e prevenção da saúde são necessários para essa população, principalmente entre os beneficiados pelo PBF.

Abstract A cross-sectional study was conducted to evaluate and compare dietary intake, type of assistance (Basic Health Units - UBS and Family Health Strategies - ESF) and participation in the "Bolsa Família" Program (PBF) among users of the Brazilian Unified Health System, (SUS). The sample was composed of individuals of both sexes between 18 and 78 years of age in Porto Alegre, state of Rio Grande do Sul. Socioeconomic, clinical and food consumption data were collected via a questionnaire adapted from the SISVAN and VIGITEL national surveys. The analyses were conducted using R3.1 software. Of the 187 patients, 91 were affiliated to the ESF, 96 to UBS and 40 were registered with the PBF. A healthy eating pattern was identified in only 41% of SUS users. It was observed that 55% did not consume raw salad (37% p = 0.04) and vegetable consumption was lower among the PBF users (67.5% versus 75.9%; p = 0.02). There was no significant difference in food consumption considering the kind of assistance (ESF or UBS). A healthy consumption pattern was not associated with demographic and socioeconomic variables. The majority of beneficiaries of the PBF did not admit to healthy eating patterns. Therefore, effective health promotion and prevention is needed for this population, mainly among the beneficiaries of the PBF.

Dieta isenta de glúten e caseína no transtorno do espectro autista: uma revisão sistemática / Gluten-free and casein-free diet in autism spectrum disorder: a systematic review / Dieta exenta de gluten y caseína en el trastorno del espectro autista: una revisión sistemática

Resumo Introdução A dieta sem glúten e sem caseína é uma prática comum no Transtorno do Espectro Autista, mas sem consenso quanto ao seu benefício clínico ou cognitivo. Objetivo Revisar sistematicamente a literatura que avalia a isenção de glúten e/ou caseína da dieta para indivíduos com Transtorno do Espectro Autista. Materiais e Métodos Revisão sistemática de literatura analisando estudos originais disponíveis até dezembro/2016 nas bases de dados: PubMed, SciELO, LILACS e BDENF. Os termos usados para a pesquisa foram: autismo, espectro autista, autismo e sem glúten, autismo e dieta livre de caseína. Para melhor direcionamento da busca de dados foi utilizado o método PICO (população, intervenção, comparação e desfecho). Resultados No total, foram incluídos 22 artigos, sendo 13 ensaios clínicos randomizados, 4 estudos de caso, 4 transversais e 1 coorte. Do total, 15 encontraram uma associação positiva de intervenção para os resultados avaliados e 7 não encontraram associação significativa. Discussão Foi encontrada grande variabilidade do tamanho amostral, idade, tempo de intervenção, cegamento, controle ou análise dietética mais apurada. Conclusões não há evidências científicas para apoiar o uso de uma dieta livre de glúten e caseína em pacientes com Transtorno do Espectro Autista. Há necessidade de novos estudos bem delineados, principalmente ensaios clínicos randomizados bem controlados, cegos, com cálculos amostrais que permitam um poder de observação apropriado, para maior segurança nessa prática.

Abstract Introduction The gluten-free and casein-free diet is a common practice in Autism Spectrum Disorder, but without consensus regarding their clinical or cognitive benefit. Objective To review systematically the literature assessing gluten- and/or casein-free diet for individuals with Autism Spectrum Disorder. Materials and Methods Systematic review of the literature analyzing original studies available until December 2016 in the databases: PubMed, SciELO, LILACS, and BDENF. The terms used for the search were autism, autism spectrum, autism and gluten-free, autism and casein-free diet. To better target the data search, the study used the PICO method (population, intervention, comparison, and outcome). Results In total, 22 articles were included, of which 13 were randomized clinical trials, four case studies, four cross-sectional studies, and one cohort. Of the total, 15 found a positive intervention association for the results evaluated and seven found no significant association. Discussion This work found much variability in sample size, age, intervention time, blinding, control, or more precise dietary analysis. Conclusions No scientific evidence supports using a gluten-free and casein-free diet in patients with Autism Spectrum Disorder. There is a need for further, well-delineated studies, especially well-controlled, blinded randomized clinical trials with sample calculations that allow appropriate observation power for greater security in this practice.

Resumen Introducción La dieta sin gluten y sin caseína es una práctica común en el Trastorno del Espectro Autista, pero sin consenso en cuanto a su beneficio clínico o cognitivo. Objetivo Revisar sistemáticamente la literatura que evalúa la exención de gluten y/o caseína de la dieta para individuos con Trastorno del Espectro Autista. Materiales y Métodos Revisión sistemática de literatura analizando estudios originales disponibles hasta diciembre/2016 en las bases de datos: PubMed, SciELO, LILACS y BDENF. Los términos utilizados para la investigación fueron: autismo, espectro autista, autismo y sin gluten, autismo y dieta libre de caseína. Para una mejor dirección de la búsqueda de datos se utilizó el método PICO (población, intervención, comparación y desenlace). Resultados En total, se incluyeron 22 artículos, siendo 13 ensayos clínicos controlados, 4 estudios de caso, 4 transversales y 1 cohorte. Del total, 15 encontraron una asociación positiva de intervención para los resultados evaluados y 7 no encontraron asociación significativa. Discusión Se encontró gran variabilidad del tamaño muestral, edad, tiempo de intervención, enmascaramiento, control o análisis dietético más preciso. Conclusiones no hay evidencias científicas para apoyar el uso de una dieta libre de gluten y caseína en pacientes con Trastorno del Espectro Autista. Hay necesidad de nuevos estudios bien diseñados, principalmente ensayos clínicos controlados, ciegos, con cálculos muestrales que permitan un poder de observación apropiado, para mayor seguridad en esa práctica

Educação nutricional no tratamento do diabetes na atenção primária à saúde: vencendo barreiras / Nutrition education in diabetes treatment in primary health care: overcoming barriers

O diabetes é um problema de saúde pública, que exige acompanhamento nutricional constante, para alcance de metas do tratamento e a maioria das pessoas é atendida nas Unidades Básicas de Saúde, onde o relato de dificuldades com o plano alimentar e não adesão ao tratamento são frequentes. O objetivo deste estudo foi avaliar um programa de educação nutricional diferenciado para Estratégias de Saúde da Família e identificar fatores que dificultam o seguimento do plano alimentar. Trata-se de um estudo longitudinal, com 77 pessoas com diabetes, que foram clinicamente avaliadas, receberam educação e orientação nutricional em um programa individual de 60 minutos, sendo reavaliadas em 3 meses, com melhora significativa da qualidade alimentar (diminuição do consumo mensal de óleo e açúcar e melhora do perfil de ingestão alimentar), e identificação dos principais fatores, que limitavam o tratamento, como comer em menor quantidade, alimentar-se em horários regulares, as restrições alimentares e a ansiedade. Não houve associação entre dificuldade em seguir a dieta com as variáveis renda, escolaridade e estado civil. Educação nutricional focada em diferentes realidades, com baixo custo e fácil realização é possível de ser realizada na Atenção Primária com bons resultados, abrindo a perspectiva para diferenciação do programa de educação em grupos, com otimização do tempo dos profissionais nesta realidade.

Diabetes is a public health problem that requires constant nutritional monitoring to reach treatment goals. Most patients are treated at Primary Health Units, where the account of difficulties with the diet plan and nonadherence to treatment are common. The objective of this study was to evaluate a differentiated nutritional education program for the Family Health Strategies and identify factors that prevent compliance with the diet plan. This is a longitudinal study with 77 people with diabetes who were clinically evaluated, received nutritional education and orientation in a 60-minute individual program, and were reassessed at 3 months. Results included significant improvement in diet quality (decrease in monthly consumption of oil and sugar and improved food intake profile), and identification of the main factors limiting treatment, how to eat in smaller quantities, eating at regular times, dietary restrictions, and anxiety. There was no association between difficulty in following the diet and the variables income, education, and marital status. Nutrition education focused on different realities, with low cost and easy application, can be carried out in primary care with good results, opening up the prospect for differentiation of the education program in groups, with optimized use of professionals' time in this reality.

Associação entre Estado Nutricional e Força de Preensão Manual em Pacientes Oncológicos em Cuidados Paliativos / Association Between Nutritional Status and Manual Grip Strength in Oncologic Patients in Palliative Care / Asociación entre Estado Nutricional y Fuerza de Asimiento Manual en Pacientes Oncológicos en Cuidados Paliativos

Introdução: O acompanhamento nutricional nos cuidados paliativos é de extrema importância, já que os níveis de mortalidade, desnutrição e perda de peso não intencional ocorre na maioria dos pacientes oncológicos. Dessa maneira, é possível prevenir carências nutricionais e perdas de peso, o que leva a uma piora do estado nutricional. Objetivo: O objetivo do estudo foi avaliar a associação entre a classificação do estado nutricional obtido pela avaliação subjetiva global produzida pelo próprio paciente (ASG-PPP), a força de preensão manual (FPM) e a espessura do músculo adutor do polegar (EMAP) em pacientes oncológicos em cuidados paliativos exclusivos. Método: Foram avaliados 70 pacientes oncológicos cadastrados no Programa de Cuidados Paliativos. Para a avaliação do estado nutricional, foi utilizada a ASG-PPP. Para avaliar a associação do estado nutricional com outras medidas preditoras, foram realizadas as medidas da FPM com um dinamômetro e a EMAP com um adipômetro. Foram utilizadas estatísticas descritivas e a análise de regressão linear para avaliar a capacidade dessas medidas de predizer o estado nutricional. Resultados: Dos 70 pacientes, com idade entre 31 e 101 anos, 58,6% eram do sexo masculino e foi encontrada frequência de desnutrição (B+C) em 87,2% (n=61) de acordo com a ASG-PPP. O valor da EMAP estava alterado em 72,9% (n=51) pacientes e 42,9% (n=30) na FPM. A FPM foi associada ao ASG-PPP (b=-0,273; p=0,04) e o EMAP não (b=-0,124; p=0,546); portanto, somente o FPM foi um bom preditor do estado nutricional neste estudo. Conclusão: Sugere-se a utilização da FPM para avaliação do estado nutricional em pacientes oncológicos paliativos.

Introduction: Nutritional monitoring in palliative care is extremely important, since levels of mortality, malnutrition and unintentional weight loss occur in the majority of cancer patients. In this way, it is possible to prevent nutritional deficiencies and weight loss, which leads to a worsening nutritional status. Objective: The aim of the study was to evaluate the association between the classification of nutritional status obtained by the patient-generated subjective global assessment (PG-SGA), handgrip strength (HGS) and adductor pollicis muscle (APM) in cancer patients palliative. Method: We evaluated 70 cancer patients enrolled in the exclusive palliative care program. The PG-SGA was used to assess the nutritional status. To evaluate the association of nutritional status with other predictive measures, HGS measurements were performed with a dynamometer and APM with an adipometer. Descriptive statistics and linear regression analysis were used to evaluate the ability of these measures to predict nutritional status. Results: Of the 70 patients, aged between 31 and 101 years, in which 58.6% were male and malnutrition (B+C) was found in 87.2% (n=61) according to PG-SGA. The value of APM was altered in 72.9% (n=51) patients and 42.9% (n=30) in HGS. HGS was associated with PG-SGA (b=-0.273, p=0.04) and APM didn't (b=-0,124; p=0.546); therefore, only HGS was a good predictor of nutritional status in this study. Conclusion: It's suggested the use of HGS to evaluate nutritional status in palliative cancer patients.

Introducción: El seguimiento nutricional en los cuidados paliativos es de extrema importancia, ya que los niveles de mortalidad, desnutrición y pérdida de peso no intencional ocurre en la mayoría de los pacientes oncológicos. De esta manera, es posible prevenir carencias nutricionales y pérdidas de peso, lo que lleva a un empeoramiento del estado nutricional. Objetivo: El objetivo del estudio fue evaluar la asociación entre la clasificación del estado nutricional obtenido por la valoración subjetiva global generada por el Paciente (GP-VSG), la fuerza de asimiento manual (FAM) y el espesor del músculo aductor del pollicis (EMAP) en pacientes oncológicos paliativos exclusivos. Método: Se evaluaron 70 pacientes oncológicos registrados en el Programa de Cuidados Paliativos. Para la evaluación del estado nutricional se utilizó la GP-VSG.Para evaluar la asociación del estado nutricional con otras medidas preditoras, se realizaron las medidas de la FAM con un dinamómetro y EMAP con un adipómetro. Se utilizaron estadísticas descriptivas y análisis de regresión lineal para evaluar la capacidad de esas medidas de predecir el estado nutricional. Resultados: De los 70 pacientes, con edad entre 31 y 101 años, en que 58,6% eran del sexo masculino y se encontró frecuencia de desnutrición (B+C) en el 87,2% (n=61) de acuerdo con la GP-VSG. El valor del EMAP estaba alterada en el 72,9% (n=51) pacientes y el 42,9% (n=30) en la FAM. La FAM fue asociada al GP-VSG (b=-0,273, p=0,04) y el EMAP no (b=-0,124, p=0,546), por lo tanto, sólo el FAM fue un buen predictor del estado nutricional en este estudio. Conclusión: Se sugiere la utilización de la FAM para evaluación del estado nutricional en pacientes oncológicos paliativos.

Difference in fatty acids composition of breast adipose tissue in women with breast cancer and benign breast disease.

INTRODUCTION: Breast cancer is the second most common cancer in the world, and the most frequent cancer among women. Moreover, there are factors that influence the risk for breast cancer including the age, genetic and endocrine factors, and lifestyle. OBJECTIVES: To evaluate the consumption of fatty acids; compare the fatty acids composition in the breast adipose tissue of women with breast cancer and benign breast disease as well as potential risk factors; and describe the genotypic frequency of the Pro12Ala PPARγ polymorphism. MATERIAL AND METHODS: A hospital-based case-control study was conducted including incident cases (n= 38 breast cancer; n= 75 benign breast disease; n= 166 control). Lifestyle features, socioeconomic issues, dietary intake, anthropometry, and blood and tissue data were assessed. RESULTS: No differences were observed for fatty acids intake. Interestingly, lauric acid (p = 0.001), myristic acid (p = 0.036), stearic acid (p = 0.031), and total saturated fatty acids (SFAs) (p = 0.048) had lower concentrations in BC than in BBD women, while palmitoleic acid (p = 0.022), erucic acid (p = 0.002), total monounsaturated fatty acids (MUFAs) (p = 0.039) and oleic acid/stearic acid ratio (p = 0.015) increased. There was no significant association between PPARγ polymorphism and studied groups (p = 0.977). The age at first full pregnancy (p = 0.004) was significantly associated with the development BC, whereas BMI (p = 0.005); percentage of body fat (p = 0.024); physical activity (p = 0.036); and age at menarche (p = 0.008), at first full pregnancy (p < 0.001), and of first mammogram (p = 0.018) were significantly associated with the development of BBD. CONCLUSION: The results suggest a different fatty acids composition of breast adipose tissue, a biomarker of long-term dietary intake, particularly for SFAs, MUFA and 18: 1 n-9/18: 00 ratio. Our findings also show that are differences in the factors related to the development of BC and BBC.

Association between the perceived environment and overweight in adults and elderly: a cross-sectional study

BACKGROUND: Overweight is a global issue of epidemic proportions, and its negative influence on individual health is clear. However, the relation between environment and overweight is not thoroughly clear, especially concerning to the perceived environment and the physical and social aspects. Therefore, this study aimed to analyze potential associations between the perceived environment and overweight in adults and elderly in a medium-sized city. METHODS: A cross-sectional population-based study was conducted with 808 adult and elderly individuals. Overweight was defined as body mass index≥25 kg/m2based on the World Health Organization criteria. The Neighborhood Environment Walkability Scale was used evaluating the perceived environment. Poisson regression was performed evaluating the relationships between the perceived environment and overweight .RESULTS: The frequency of overweight was 50.4 %. Adjusted models showed association between overweight and the variable of surrounding neighborhood as follows:"1- to 3-story apartments or condos"(most category; PR = 0.30; CI 0.12­0.76) and"4- to 6-story apartments or condos"(all categories) (PR ranged 0.40 to 0.46;p< 0.05), and also,"l and-use mix-diversity" was associated with overweight in this population (PR 0.81; CI 0.66­0.99).CONCLUSIONS: In addition to individual characteristics, the environmental aspects are relevant to the occurrence of overweight in this population. Population-based studies using primary data on overweight remain scarce in Brazil. Finally, this study contributes to improve the understanding of the complex relationship between perceived environment and overweight, and we believe that our findings provide further justification for the development of future interventions and health promotion strategies.

Fasting in elective surgical patients: comparison among the time prescribed, performed and recommended on perioperative care protocols / Jejum em pacientes cirúrgicos eletivos: comparação entre o tempo prescrito, praticado e o indicado em protocolos de cuidados perioperatórios

Background: Prolonged preoperative fasting may impair nutritional status of the patient and their recovery. In contrast, some studies show that fasting abbreviation can improve the response to trauma and decrease the length of hospital stay. Aim: Investigate whether the prescribed perioperative fasting time and practiced by patients is in compliance with current multimodal protocols and identify the main factors associated. Methods: Cross-sectional study with 65 patients undergoing elective surgery of the digestive tract or abdominal wall. We investigated the fasting time in the perioperative period, hunger and thirst reports, physical status, diabetes diagnosis, type of surgery and anesthesia. Results: The patients were between 19 and 87 years, mostly female (73.8%). The most performed procedure was cholecystectomy (47.69%) and general anesthesia the most used (89.23%). The most common approach was to start fasting from midnight for liquids and solids, and most of the patients received grade II (64.6%) to the physical state. The real fasting average time was 16 h (9.5-41.58) was higher than prescribed (11 h, 6.58 -26.75). The patients submitted to surgery in the afternoon were in more fasting time than those who did in the morning (p<0.001). The intensity of hunger and thirst increased in postoperative fasting period (p=0.010 and 0.027). The average period of postoperative fasting was 18.25 h (3.33-91.83) and only 23.07% restarted feeding on the same day. Conclusion: Patients were fasted for prolonged time, higher even than the prescribed time and intensity of the signs of discomfort such as hunger and thirst increased over time. To better recovery and the patient's well-being, it is necessary to establish a preoperative fasting abbreviation protocol.

Racional: O jejum perioperatório prolongado pode prejudicar estado nutricional do paciente e sua recuperação. Em contrapartida, estudos mostram que abreviação do jejum pode melhorar a resposta ao trauma e diminuir o tempo de internação. Objetivo: Investigar se o tempo de jejum perioperatório prescrito e praticado pelos pacientes se encontra em conformidade com os protocolos multimodais atuais e identificar os principais fatores associados. Métodos: Estudo transversal com 65 pacientes, submetidos às operações eletivas do aparelho digestivo ou parede abdominal. Foi investigado o tempo de jejum no período perioperatório, relatos de fome e sede, classificação do estado físico, diagnóstico de diabete, tipo de operação e de anestesia. Resultados: Os pacientes tinham entre 19 e 87 anos, sendo a maioria do sexo feminino (73,8%). O procedimento mais realizado foi colecistectomia (47,69%) e a anestesia geral a mais usada (89,23%). A orientação mais frequente foi jejum a partir de meia noite para líquidos e sólidos e a maior parte dos pacientes recebeu classificação II (64,6%) para o estado físico. O tempo médio de jejum real foi 16 h (9,5-41,58) sendo maior que o prescrito (11 h; 6,58-26,75) com p<0,001. Aqueles que realizaram a operação no período da tarde ficaram mais tempo de jejum do que aqueles do período matutino (p<0,001). A intensidade de fome e sede aumentou no período de jejum pós-operatório (p=0,010 e 0,027). O período de jejum médio pós-operatório foi 18,25 h (3,33-91,83) e apenas 23,07% reiniciou a alimentação no mesmo dia. Conclusão: Os pacientes permaneceram em jejum por tempo prolongando, ainda maior que o tempo prescrito e a intensidade dos sinais de desconforto como fome e sede aumentaram ao longo do tempo. Para melhor recuperação e bem-estar do paciente, faz-se necessário instituir um protocolo de abreviação do jejum perioperatório.